| Message ID | 1653507433-22585-3-git-send-email-quic_khsieh@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | eDP/DP Phy vdda realted function | expand |
Hi, On Wed, May 25, 2022 at 12:37 PM Kuogee Hsieh <quic_khsieh@quicinc.com> wrote: > > This patch add regulator_set_load() before enable regulator at > DP phy driver. > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > Reviewed-by: Stephen Boyd <swboyd@chromium.org> > --- > drivers/phy/qualcomm/phy-qcom-qmp.c | 41 +++++++++++++++++++++++++++++-------- > 1 file changed, 32 insertions(+), 9 deletions(-) > > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c > index b144ae1..5fda39f 100644 > --- a/drivers/phy/qualcomm/phy-qcom-qmp.c > +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c > @@ -3075,6 +3075,17 @@ static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_misc_tbl[] = { > QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_PRE_GAIN, 0x2e), > }; > > +/* list of regulators */ > +struct qmp_regulator_data { > + const char *name; > + unsigned int enable_load; > +}; > + > +struct qmp_regulator_data qmp_phy_vreg_l[] = { > + { .name = "vdda-phy", .enable_load = 21800 }, > + { .name = "vdda-pll", .enable_load = 36000 }, > +}; > + > struct qmp_phy; > > /* struct qmp_phy_cfg - per-PHY initialization config */ > @@ -3129,7 +3140,7 @@ struct qmp_phy_cfg { > const char * const *reset_list; > int num_resets; > /* regulators to be requested */ > - const char * const *vreg_list; > + const struct qmp_regulator_data *vreg_list; > int num_vregs; > > /* array of registers with different offsets */ > @@ -3341,11 +3352,6 @@ static const char * const sdm845_pciephy_reset_l[] = { > "phy", > }; > > -/* list of regulators */ > -static const char * const qmp_phy_vreg_l[] = { > - "vdda-phy", "vdda-pll", > -}; > - > static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = { > .type = PHY_TYPE_USB3, > .nlanes = 1, > @@ -5488,16 +5494,33 @@ static int qcom_qmp_phy_vreg_init(struct device *dev, const struct qmp_phy_cfg * > { > struct qcom_qmp *qmp = dev_get_drvdata(dev); > int num = cfg->num_vregs; > - int i; > + int ret, i; > > qmp->vregs = devm_kcalloc(dev, num, sizeof(*qmp->vregs), GFP_KERNEL); > if (!qmp->vregs) > return -ENOMEM; > > for (i = 0; i < num; i++) > - qmp->vregs[i].supply = cfg->vreg_list[i]; > + qmp->vregs[i].supply = cfg->vreg_list[i].name; > > - return devm_regulator_bulk_get(dev, num, qmp->vregs); > + ret = devm_regulator_bulk_get(dev, num, qmp->vregs); > + if (ret) { > + dev_err(dev, "failed at devm_regulator_bulk_get\n"); > + goto err; There's no reason for a goto and in general kernel style that I've seen would suggest just "return ret;" here > + } > + > + for (i = 0; i < num; i++) { > + ret = regulator_set_load(qmp->vregs[i].consumer, > + cfg->vreg_list[i].enable_load); super nitty, but there should be one more space before "cfg" to line up under the parenthesis. > + if (ret) { > + dev_err(dev, "failed to set load at %s\n", > + qmp->vregs[i].supply); > + break; optional: I guess I don't care tons, but I'd be tempted to just "return ret;" here. Then at the end of the function just "return 0;" All of these are pretty nitty though, so I'm happy enough with: Reviewed-by: Douglas Anderson <dianders@chromium.org> On Wed, May 25, 2022 at 12:37 PM Kuogee Hsieh <quic_khsieh@quicinc.com> wrote: > > This patch add regulator_set_load() before enable regulator at > DP phy driver. > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > Reviewed-by: Stephen Boyd <swboyd@chromium.org> > --- > drivers/phy/qualcomm/phy-qcom-qmp.c | 41 +++++++++++++++++++++++++++++-------- > 1 file changed, 32 insertions(+), 9 deletions(-) > > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c > index b144ae1..5fda39f 100644 > --- a/drivers/phy/qualcomm/phy-qcom-qmp.c > +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c > @@ -3075,6 +3075,17 @@ static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_misc_tbl[] = { > QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_PRE_GAIN, 0x2e), > }; > > +/* list of regulators */ > +struct qmp_regulator_data { > + const char *name; > + unsigned int enable_load; > +}; > + > +struct qmp_regulator_data qmp_phy_vreg_l[] = { > + { .name = "vdda-phy", .enable_load = 21800 }, > + { .name = "vdda-pll", .enable_load = 36000 }, > +}; > + > struct qmp_phy; > > /* struct qmp_phy_cfg - per-PHY initialization config */ > @@ -3129,7 +3140,7 @@ struct qmp_phy_cfg { > const char * const *reset_list; > int num_resets; > /* regulators to be requested */ > - const char * const *vreg_list; > + const struct qmp_regulator_data *vreg_list; > int num_vregs; > > /* array of registers with different offsets */ > @@ -3341,11 +3352,6 @@ static const char * const sdm845_pciephy_reset_l[] = { > "phy", > }; > > -/* list of regulators */ > -static const char * const qmp_phy_vreg_l[] = { > - "vdda-phy", "vdda-pll", > -}; > - > static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = { > .type = PHY_TYPE_USB3, > .nlanes = 1, > @@ -5488,16 +5494,33 @@ static int qcom_qmp_phy_vreg_init(struct device *dev, const struct qmp_phy_cfg * > { > struct qcom_qmp *qmp = dev_get_drvdata(dev); > int num = cfg->num_vregs; > - int i; > + int ret, i; > > qmp->vregs = devm_kcalloc(dev, num, sizeof(*qmp->vregs), GFP_KERNEL); > if (!qmp->vregs) > return -ENOMEM; > > for (i = 0; i < num; i++) > - qmp->vregs[i].supply = cfg->vreg_list[i]; > + qmp->vregs[i].supply = cfg->vreg_list[i].name; > > - return devm_regulator_bulk_get(dev, num, qmp->vregs); > + ret = devm_regulator_bulk_get(dev, num, qmp->vregs); > + if (ret) { > + dev_err(dev, "failed at devm_regulator_bulk_get\n"); > + goto err; > + } > + > + for (i = 0; i < num; i++) { > + ret = regulator_set_load(qmp->vregs[i].consumer, > + cfg->vreg_list[i].enable_load); > + if (ret) { > + dev_err(dev, "failed to set load at %s\n", > + qmp->vregs[i].supply); > + break; > + } > + } > + > +err: > + return ret; > } > > static int qcom_qmp_phy_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg) > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index b144ae1..5fda39f 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -3075,6 +3075,17 @@ static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_misc_tbl[] = { QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_PRE_GAIN, 0x2e), }; +/* list of regulators */ +struct qmp_regulator_data { + const char *name; + unsigned int enable_load; +}; + +struct qmp_regulator_data qmp_phy_vreg_l[] = { + { .name = "vdda-phy", .enable_load = 21800 }, + { .name = "vdda-pll", .enable_load = 36000 }, +}; + struct qmp_phy; /* struct qmp_phy_cfg - per-PHY initialization config */ @@ -3129,7 +3140,7 @@ struct qmp_phy_cfg { const char * const *reset_list; int num_resets; /* regulators to be requested */ - const char * const *vreg_list; + const struct qmp_regulator_data *vreg_list; int num_vregs; /* array of registers with different offsets */ @@ -3341,11 +3352,6 @@ static const char * const sdm845_pciephy_reset_l[] = { "phy", }; -/* list of regulators */ -static const char * const qmp_phy_vreg_l[] = { - "vdda-phy", "vdda-pll", -}; - static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = { .type = PHY_TYPE_USB3, .nlanes = 1, @@ -5488,16 +5494,33 @@ static int qcom_qmp_phy_vreg_init(struct device *dev, const struct qmp_phy_cfg * { struct qcom_qmp *qmp = dev_get_drvdata(dev); int num = cfg->num_vregs; - int i; + int ret, i; qmp->vregs = devm_kcalloc(dev, num, sizeof(*qmp->vregs), GFP_KERNEL); if (!qmp->vregs) return -ENOMEM; for (i = 0; i < num; i++) - qmp->vregs[i].supply = cfg->vreg_list[i]; + qmp->vregs[i].supply = cfg->vreg_list[i].name; - return devm_regulator_bulk_get(dev, num, qmp->vregs); + ret = devm_regulator_bulk_get(dev, num, qmp->vregs); + if (ret) { + dev_err(dev, "failed at devm_regulator_bulk_get\n"); + goto err; + } + + for (i = 0; i < num; i++) { + ret = regulator_set_load(qmp->vregs[i].consumer, + cfg->vreg_list[i].enable_load); + if (ret) { + dev_err(dev, "failed to set load at %s\n", + qmp->vregs[i].supply); + break; + } + } + +err: + return ret; } static int qcom_qmp_phy_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)